Air quality alerts are being issued on both sides of the border for similar reasons.
Smoke from forest fires, primarily in Ontario’s Far North, is being blown into our region and down south as far away as Duluth, Minnesota.
Smoke from these forest fires is expected to linger in the area until tomorrow morning.
Environment Canada says children, seniors, and those with asthma or other breathing conditions are especially at risk.
The forest fire hazard in northwestern Ontario remains high to extreme.
It has lowered in areas to the west of Fort Frances and in parts of the Kenora and Dryden areas.
There were sixteen new fires reported Sunday.
It included a fire within Quetico Provincial Park near Sark Lake, about 46 kilometres southeast of Atikokan.
That fire has scorched about five hectares of forest land.
There are now over 50 active fires in the northwest. Twelve are considered not under control.